Perhaps you should try some spelling variations:
invent conversations » content conversations, violent conversations, agent conversations
design conversations » design considerations, design construction, design conclusions
union conversations » win conversations, driven conversations, second conversations
20th century » 18th century
bief history » brief history, brief hystory, reef history
ref history » reef history, brief history, etf history
imf history » brief history
2 germany » 7 germany, 2 german, 8 germany
2f 20th » 20 20th, 2.2 20th

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: %22christian ((((union conversations) OR (invent conversations))) OR (design conversations)) %2 germany %((imf history) OR (((ref history) OR (bief history)))) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((((union conversations) OR (invent conversations))) or (design conversations)) %2 germany %((imf history) or (((ref history) or (bief history)))) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((((union conversations) OR (invent conversations))) or (design conversations)) %2 germany %((imf history) or (((ref history) or (bief history)))) %2f 20th century%22*.